Demodulator using digital circuitry

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United States of America Patent

PATENT NO 6639459
SERIAL NO

10133924

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Abstract

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A demodulator converts a voltage input to an output voltage. The demodulator has a voltage-controlled oscillator (VCO), a counter, a holding apparatus, and a digital compare apparatus. The VCO generates a signal having a frequency proportional to the analog input voltage. The counter counts each cycle of the signal generated by the VCO and outputs a count signal representative of the cycle count. The holding apparatus holds the count signal and generates a held count signal. The digital compare apparatus compares the count signal and the held count signal and generates the digital output.

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Patent Owner(s)

Patent OwnerAddress
CELIS SEMICONDUCTOR CORPORATION5475 MARK DABLING BOULEVARD SUITE 102 COLORADO SPRINGS CO 80918

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Devilbiss, Alan D Colorado Springs, CO 21 375

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